Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Spot the cat in the picture below

A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?

What has one letter and starts with an E?

What always comes into a house through the keyhole?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

What part of Turkey has the most feathers?

Can you find out which number multiplied by itself will give the output as 12345678987654321?